Troubleshooting
Microsoft’s CVE-2022-38023 vulnerability exposed Windows systems to remote code execution—until a patch finally arrived.
Imagine logging into your computer, only to find it silently compromised by an attacker exploiting a flaw in the Windows Common Log File System Driver. That’s exactly what happened before Microsoft’s emergency patch closed this gaping hole in Windows 10, 11, and Server versions.
This wasn’t just another update—it was a race against time. Hackers could’ve hijacked unpatched systems, stolen data, or even taken full control. The good news? Microsoft fixed it, but only if you’ve installed the right updates.
Here’s how to check if your system is protected, what to do if it’s still vulnerable, and why this patch matters more than you might think.
How to check if your Windows system has CVE-2022-38023 patch installed
Microsoft’s CVE-2022-38023 vulnerability affected Windows systems by allowing remote code execution through the Common Log File System Driver. The patch was released in November 2022, but not all systems updated automatically. Here’s how to confirm if your Windows 10, 11, or Server is protected.
Before diving into checks, ensure your system is up-to-date. Open Settings > Windows Update and verify the last installed KB5019961 (Windows 11) or KB5019958 (Windows 10) update. If missing, manual installation is critical. Let’s verify your patch status systematically.
Step-by-Step Patch Verification
- Method 1: Windows Update History
- Press Win + I to open Settings.
- Go to Update & Security > Windows Update > Update history.
- Look for KB5019961 (Windows 11) or KB5019958 (Windows 10).
- Method 2: PowerShell Command
- Open PowerShell as Admin (search "powershell" > right-click > "Run as administrator").
- Run:
Get-HotFix | Where-Object {$.HotFixID -like "_KB50199_"}. - Check if the KB number appears in results.
- Method 3: Microsoft’s Official Checker
- Download Microsoft’s Security Update Validation Tool from their official site.
- Run the tool and select CVE-2022-38023 from the list.
- Follow prompts to verify patch status.
- Method 4: Registry Check (Advanced)
- Press Win + R, type
regedit, and hit Enter. - Navigate to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\Packages. - Search for KB5019961 or KB5019958 in the list.
- Press Win + R, type
⚡ Pro Tip: If the patch is missing, proceed to Method 5 below for manual installation.
If none of the above methods confirm the patch, your system remains vulnerable. The next step is manual patch installation. Visit Microsoft’s Update Catalog (link) and search for the KB number matching your Windows version. Download and install the .msu file via PowerShell or Command Prompt.
For Windows Server users, the process is identical but may require rebooting into Safe Mode if updates are blocked by services. Use DISM commands like DISM /Online /Add-Package /PackagePath:KB5019961.msu for server-specific installations. Always verify patch success post-reboot.
Third-party tools like Nessus or OpenVAS can also scan for CVE-2022-38023. These tools cross-reference your system against Microsoft’s Common Vulnerabilities and Exposures (CVE) database for a comprehensive security audit. I recommend running a scan if you manage multiple machines.
Once confirmed patched, monitor for future updates. Microsoft often releases cumulative updates that include critical fixes. Enable automatic updates in Settings > Windows Update > Advanced options to stay protected. For enterprise environments, deploy the patch via Windows Server Update Services (WSUS).
If your system still shows as vulnerable after manual checks, consider reinstalling Windows as a last resort. Back up critical data first, then use the Media Creation Tool to perform a clean install. This ensures all security patches are applied from the start.
Staying ahead of vulnerabilities like CVE-2022-38023 requires proactive checks. Bookmark Microsoft’s Security Update Guide (link) for real-time patch alerts. Regular audits using the methods above will keep your system secure against evolving threats.
What to do if your system is still vulnerable to CVE-2022-38023
If your system remains unpatched, you’re exposed to remote code execution attacks targeting the Windows Common Log File System Driver. This vulnerability allows attackers to escalate privileges or execute malicious code with system-level access. Your immediate priority should be installing the patch or applying workarounds to mitigate risks.
Microsoft released KB5016616 (Windows 11) and KB5016615 (Windows 10) to address this flaw. If automatic updates failed, you’ll need to manually install these patches via the Microsoft Update Catalog or Windows Update. Below, I’ll walk you through the steps and provide troubleshooting tips for stubborn update failures.
CVE-2022-38023 is actively exploited in the wild. If your system is unpatched, attackers may already have compromised it. Follow these steps immediately to secure your environment.
Start by downloading the correct patch from Microsoft’s official Update Catalog. For Windows 11, navigate to Microsoft Update Catalog and search for KB5016616. For Windows 10, use KB5016615.
Save the .msu file to your desktop and run it as an administrator. If prompted, restart your system to complete the installation.
If the patch fails to install, check for conflicting software or corrupt system files. Open Command Prompt as Admin and run:
sfc /scannow
dism /online /cleanup-image /restorehealth
These commands repair system files that may block the update. Afterward, retry installing the patch.
For systems where patching isn’t immediately possible—such as servers or legacy devices—disable the affected Common Log File System Driver temporarily. Open Device Manager, locate Non-Plug and Play Drivers, right-click the CLFS driver, and select Disable device.
This isn’t a permanent fix but reduces exposure until you can apply the patch.
Monitor Microsoft’s Security Update Guide for additional advisories. If you’re managing multiple devices, deploy the patch via Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager to ensure all systems are protected. Never ignore this update—exploits are widespread and evolving.